MSP430G2xx3 launchpad UART baud rate @ 9600

Hi,

Can anyone help me in setting baud rate on BRCLK Frequency = 1,048,576 (1.05Mhz) on launchpad MSP430G2xx3 board?  I modified TI example code to include changes for 1.05 Mhz clock but I don't see any change when analyzed through oscilloscope, basically signal width remains same between 1Mhz to 1.05 Mhz.. i.e., 104us.

Modified TI example code.

#include <msp430.h>

#define BAUDRATE   9600



//------------------------------------------------------------------------------
// Hardware-related definitions
//------------------------------------------------------------------------------
#define UART_TXD   0x02                     // TXD on P1.1 (Timer0_A.OUT0)
#define UART_RXD   0x04                     // RXD on P1.2 (Timer0_A.CCI1A)

//------------------------------------------------------------------------------
// Conditions for BAUDRATE Baud SW UART, SMCLK = 1MHz
//------------------------------------------------------------------------------


#define UART_TBIT_DIV_2     (1000000 / (BAUDRATE * 2))
#define UART_TBIT           (1000000 / BAUDRATE)

//------------------------------------------------------------------------------
// Global variables used for full-duplex UART communication
//------------------------------------------------------------------------------
unsigned int txData;                        // UART internal variable for TX
unsigned char rxBuffer;                     // Received UART character

//------------------------------------------------------------------------------
// Function prototypes
//------------------------------------------------------------------------------
void TimerA_UART_init(void);
void TimerA_UART_tx(unsigned char byte);
void TimerA_UART_print(char *string);

int k = 0;

//------------------------------------------------------------------------------
// main()
//------------------------------------------------------------------------------
int main(void)
{
    WDTCTL = WDTPW + WDTHOLD;               // Stop watchdog timer
    if (CALBC1_1MHZ==0xFF)                    // If calibration constant erased
    {
      while(1);                               // do not load, trap CPU!!
    }

    DCOCTL = 0;                             // Select lowest DCOx and MODx settings
    BCSCTL1 = CALBC1_1MHZ;                  // Set DCOCLK to 1MHz
    DCOCTL = CALDCO_1MHZ;

    UCA0CTL1 |= UCSSEL_2;                     // SMCLK
    UCA0BR0 = 109;                            // 1.05MHz 9600
    UCA0BR1 = 0;                              // 1.05MHz 9600
    UCA0MCTL = UCBRS0;                        // Modulation UCBRSx = 1
    UCA0CTL1 &= ~UCSWRST;                     // **Initialize USCI state machine**

    P1OUT = 0x00;                           // Initialize all GPIO
    P1SEL = UART_TXD + UART_RXD;            // Timer function for TXD/RXD pins
    P1DIR = 0xFF & ~UART_RXD;               // Set all pins but RXD to output
    P2OUT = 0x00;
    P2SEL = 0x00;
    P2DIR = 0xFF;



    __enable_interrupt();

      TimerA_UART_init();                     // Start Timer_A UART
  //  TimerA_UART_print("Hello Krishna\r\n");
  //  TimerA_UART_print("How are you ?.\r\n");

    for (;;)
    {
        // Wait for incoming character
     //   __bis_SR_register(LPM0_bits);

        // Echo received character
          TimerA_UART_tx('U');

          for(k = 0; k<100; k++);

     }
       // TimerA_UART_tx(0x0f);

}
//------------------------------------------------------------------------------
// Function configures Timer_A for full-duplex UART operation
//------------------------------------------------------------------------------
void TimerA_UART_init(void)
{
    TACCTL0 = OUT;                          // Set TXD Idle as Mark = '1'
    TACCTL1 = SCS + CM1 + CAP + CCIE;       // Sync, Neg Edge, Capture, Int
    TACTL = TASSEL_2 + MC_2;                // SMCLK, start in continuous mode
}
//------------------------------------------------------------------------------
// Outputs one byte using the Timer_A UART
//------------------------------------------------------------------------------
void TimerA_UART_tx(unsigned char byte)
{
    while (TACCTL0 & CCIE);                 // Ensure last char got TX'd
    TACCR0 = TAR;                           // Current state of TA counter
    TACCR0 += UART_TBIT;                    // One bit time till first bit
    TACCTL0 = OUTMOD0 + CCIE;               // Set TXD on EQU0, Int
    txData = byte;                          // Load global variable
    txData |= 0x100;                        // Add mark stop bit to TXData
    txData <<= 1;                           // Add space start bit
}

//------------------------------------------------------------------------------
// Prints a string over using the Timer_A UART
//------------------------------------------------------------------------------
void TimerA_UART_print(char *string)
{
    while (*string) {
        TimerA_UART_tx(*string++);
    }
}
//------------------------------------------------------------------------------
// Timer_A UART - Transmit Interrupt Handler
//------------------------------------------------------------------------------
#pragma vector = TIMER0_A0_VECTOR
__interrupt void Timer_A0_ISR(void)
{
    static unsigned char txBitCnt = 10;

    TACCR0 += UART_TBIT;                    // Add Offset to CCRx
    if (txBitCnt == 0) {                    // All bits TXed?
        TACCTL0 &= ~CCIE;                   // All bits TXed, disable interrupt
        txBitCnt = 10;                      // Re-load bit counter
    }
    else {
        if (txData & 0x01) {
          TACCTL0 &= ~OUTMOD2;              // TX Mark '1'
        }
        else {
          TACCTL0 |= OUTMOD2;               // TX Space '0'
        }
        txData >>= 1;
        txBitCnt--;
    }
}
//------------------------------------------------------------------------------
// Timer_A UART - Receive Interrupt Handler
//------------------------------------------------------------------------------
#pragma vector = TIMER0_A1_VECTOR
__interrupt void Timer_A1_ISR(void)
{
    static unsigned char rxBitCnt = 8;
    static unsigned char rxData = 0;

    switch (__even_in_range(TA0IV, TA0IV_TAIFG)) { // Use calculated branching
        case TA0IV_TACCR1:                        // TACCR1 CCIFG - UART RX
            TACCR1 += UART_TBIT;                 // Add Offset to CCRx
            if (TACCTL1 & CAP) {                 // Capture mode = start bit edge
                TACCTL1 &= ~CAP;                 // Switch capture to compare mode
                TACCR1 += UART_TBIT_DIV_2;       // Point CCRx to middle of D0
            }
            else {
                rxData >>= 1;
                if (TACCTL1 & SCCI) {            // Get bit waiting in receive latch
                    rxData |= 0x80;
                }
                rxBitCnt--;
                if (rxBitCnt == 0) {             // All bits RXed?
                    rxBuffer = rxData;           // Store in global variable
                    rxBitCnt = 8;                // Re-load bit counter
                    TACCTL1 |= CAP;              // Switch compare to capture mode
                    __bic_SR_register_on_exit(LPM0_bits);  // Clear LPM0 bits from 0(SR)
                }
            }
            break;
    }
}
//------------------------------------------------------------------------------